Package org.europa.together.business

Interface GenericDAO<T,PK extends Serializable>

Type Parameters:
T - the entity to save
PK - the primary key
All Superinterfaces:
Serializable
All Known Subinterfaces:
ConfigurationDAO
All Known Implementing Classes:
ConfigurationHbmDAO, GenericHbmDAO
@API(status=STABLE, since="1.0", consumers="GenrericHbmDAO") @Component public interface GenericDAO<T,PK extends Serializable> extends Serializable
GenericDAO primary for CRUD database operations. To use the DAO by your own configuration, you need to load the spring-dao.xml into your Spring context.
A detailed documentation can found at: https://github.com/ElmarDott/TP-CORE/wiki/%5BCORE-02%5D-generic-Data-Access-Object---DAO
Since:
1.0
Version:
1.4
Author:
elmar.dott@gmail.com

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    FEATURE_ID
    Identifier for the given feature.

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    countAllElements()
    Count the entries of corresponding table to the domain object is specialized in the DAO.
    boolean
    create(T object)
    Persist a new entity and return TRUE if it was successful.In the case that the entity is already existing or the persist project is not a valid entity the method return FALSE.
    void
    delete(PK id)
    Search for an persistent entity.If it's already existent then it will be delete, otherwise a EntityNotFoundException will thrown.
    List<T>
    deserializeJsonAsList(String json)
    Tries to create from a collection of JSON objects a list of enties.
    T
    deserializeJsonAsObject(String json, Class<T> object)
    Tried to create a entity object from a given JSON String.
    T
    find(PK id)
    Try to find a persited domain object.
    PK
    getPrimaryKeyOfObject(T object)
    Get the primary key of the DAO entity.
    List<T>
    listAllElements(JpaPagination seekElement)
    Get all persited entries of an entity as list.
    String
    serializeAsJson(T object)
    Check if the entity is not NULL and try to create a JSON object as String, otherwise the String will be empty.
    void
    update(PK id, T object)
    Search an entity in the persistence context and update it.If it's not exist a EntityNotFoundException will thrown.

  • Field Details

    • FEATURE_ID

      @API(status=STABLE, since="1.2") static final String FEATURE_ID
      Identifier for the given feature.
      See Also:

  • Method Details

    • create

      @API(status=STABLE, since="1.0") boolean create(T object) throws DAOException
      Persist a new entity and return TRUE if it was successful.In the case that the entity is already existing or the persist project is not a valid entity the method return FALSE.
      Parameters:
      object - as Generic
      Returns:
      true on success
      Throws:
      DAOException

    • delete

      @API(status=STABLE, since="1.0") void delete(PK id) throws DAOException
      Search for an persistent entity.If it's already existent then it will be delete, otherwise a EntityNotFoundException will thrown.
      Parameters:
      id - as Generic
      Throws:
      DAOException

    • update

      @API(status=STABLE, since="1.0") void update(PK id, T object) throws DAOException
      Search an entity in the persistence context and update it.If it's not exist a EntityNotFoundException will thrown.
      Parameters:
      id - as Generic
      object - as Generic
      Throws:
      DAOException

    • countAllElements

      @API(status=STABLE, since="3.0") long countAllElements()
      Count the entries of corresponding table to the domain object is specialized in the DAO.
      Returns:
      count as long

    • listAllElements

      @API(status=STABLE, since="1.0") List<T> listAllElements(JpaPagination seekElement)
      Get all persited entries of an entity as list.
      Parameters:
      seekElement - as JpaPagination
      Returns:
      List of Entity Objects

    • getPrimaryKeyOfObject

      @API(status=STABLE, since="1.0") PK getPrimaryKeyOfObject(T object)
      Get the primary key of the DAO entity.
      Parameters:
      object - as Genric
      Returns:
      id as Genric

    • serializeAsJson

      @API(status=STABLE, since="1.0") String serializeAsJson(T object) throws JsonProcessingException
      Check if the entity is not NULL and try to create a JSON object as String, otherwise the String will be empty.
      Parameters:
      object - as Generic
      Returns:
      JSON object as String
      Throws:
      JsonProcessingException
      com.fasterxml.jackson.core.JsonProcessingException

    • deserializeJsonAsObject

      @API(status=STABLE, since="2.1") T deserializeJsonAsObject(String json, Class<T> object) throws JsonProcessingException, ClassNotFoundException
      Tried to create a entity object from a given JSON String.
      Parameters:
      json - as String
      object - as T
      Returns:
      Entity as Generic
      Throws:
      JsonProcessingException
      ClassNotFoundException

    • deserializeJsonAsList

      @API(status=STABLE, since="3.0") List<T> deserializeJsonAsList(String json) throws JsonProcessingException, ClassNotFoundException
      Tries to create from a collection of JSON objects a list of enties.
      Parameters:
      json - as String
      Returns:
      List of Entities
      Throws:
      JsonProcessingException
      ClassNotFoundException

    • find

      @API(status=STABLE, since="1.0") T find(PK id)
      Try to find a persited domain object.
      Parameters:
      id - as Generic
      Returns:
      object as Generic